Home / 22,615.35-31,209.96-13,661.07

Finding the Fourth Proportional to 22,615.35, 31,209.96 and 13,661.07

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Solution

The fourth proportional to 22,615.35, 31,209.96 and 13,661.07 is: 18,852.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,615.35 : 31,209.96 = 13,661.07 : x
  2. Step 2: Convert to fraction form
    22,615.35/31,209.96 = 13,661.07/x
  3. Step 3: Cross multiply
    22,615.35x = 31,209.96 × 13,661.07
  4. Step 4: Simplify right side
    22,615.35x = 426,361,448.26
  5. Step 5: Solve for x
    x = 426,361,448.26/22,615.35
  6. Step 6: Final answer
    x = 18,852.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.